import org.apache.http.client.CredentialsProvider;
import org.apache.http.impl.client.BasicCredentialsProvider;
...
@Override
public void initialize() {
    ...
    CredentialsProvider credsProvider = new BasicCredentialsProvider();
    ...
}

<dependencies>
    <dependency>
        <groupId>org.apache.httpcomponent</groupId>
        <artifactId>httpclient</artifactId>
        <scope>runtime</scope>
    </dependency>
    <dependency>
        <groupId>org.apache.httpcomponents</groupId>
        <artifactId>httpcore</artifactId>
        <scope>runtime</scope>
    </dependency>
  </dependencies>

<scope>runtime</scope>

<scope>compile</scope>